排序方式: 共有17条查询结果,搜索用时 15 毫秒
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尽管出于规模经济性等方面的考虑,中、小型核动力发展较晚,但因其符合环保的要求,总投资小,提供动力不需要空气,既可以用于太空探索、海洋开发,又可用于制取氢等二次能源,提供热量,海水淡化等核技术应用,所以目前许多国家有了发展中小型核动力的设计方案。基于中小型核动力的未来应用前景广阔,结合我国环境、经济条件,中小型核动力应得到重点发展。 相似文献
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针对纯滞后、非线性、时变的胶黏剂生产过程,引入迭代学习控制方法,对反应液温度进行控制。仿真结果表明:与PID控制方法相比,迭代学习PID控制性能更好。 相似文献
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变频器应用中的问题及对策 总被引:2,自引:0,他引:2
变频器在运行中会出现高次谐波、噪声与振动、发热等问题.通过在变频器前加装电抗器和高频磁环、采用变压器多相运行,或设置专用滤波器消除高次谐波;在变频器输出侧接电抗器以及在变频器输出侧接入交流电抗器以吸收变频器输出电流中的高次谐波电流成分来减小震动等方法有效地解决了上述问题. 相似文献
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The ground-breaking ceremony for the Daya Reactor Neutrino Experiment China's largest single project of international collaboration in basic science as well as the biggest one between US China was held at Daya Bay Nuclear Power Base in Shenzhen on October .…… 《中国科学院院刊(英文版)》2008,22(1):20
The ground-breaking ceremony for the Daya Reactor Neutrino Experiment,China's largest single project of international collaboration in basic science as well as the biggest one between US and China,was held at Daya Bay Nuclear Power Base in Shenzhen on 13 October,2007. Chaired by CHEN Hesheng, director of the CAS Institute of High Energy Physics(IHEP),the ceremony was attended by high- 相似文献
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A novel photocatalytic reactor was developed to remove (1,1-bis(4-chlorophenyl)-2,2,2-trichloroethane) (DDT) from water. In the reactor, a cenosphere was used to support TiO2 film made by means of sol-gel. Because the cenospheres were coated with TiO2, their specific gravity was slightly increased from the original 0.6-0.8 to 0.8-0.9, so that they were able to be suspended in water. With the mixed operation of a bubbler, the water in the reactor was in a well-fluidized state. The bottom of the reactor is a sand filter bed, which can be used to prevent the photocatalyst from being lost. A mathematical model of the reactor has been developed in the two primary influential factors: ultraviolet (UV) light intensity and photocatalyst concentration. With such a model, the reactor can be designed more reasonably. 相似文献
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ABR/氧化沟/膜生物反应器处理垃圾渗滤液 总被引:1,自引:0,他引:1
针对桂林市冲口垃圾卫生填埋场垃圾渗滤液出水未能达标排放的实际情况,根据连续多月监测垃圾渗滤液水质状况,选择折流式厌氧反应器(ABR)/氧化沟/膜生物反应器组合工艺进行处理.该工艺建成后实际运行效果良好,多年运行表明系统耐负荷能力极强,厂区周围的地表水质得到了极大改善.文中介绍了该渗滤液处理系统的组成、重要构筑物及其设计参数等情况,总结了运行效果和工艺特点. 相似文献
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用旋转反应器合成纳米碳酸钙的研究 总被引:1,自引:0,他引:1
以自行研制的打孔碟片为填料,利用pH计及电导率仅确定氢氧化钙在旋转反应器中的碳化时间,用超滤膜分离氢氧化钙与碳酸钙;探讨了气体浓度、转速、分散剂等操作条件对碳化过程的影响,结果表明:氢氧化钙与二氧化碳反应生成纳米碳酸钙的过程中,气体浓度、转速、分散剂影响反应时间、产品粒度及粒度分布;利用旋转反应器制备出平均体积当量直径为30—40cm,粒度分布很窄的菱形纳米碳酸钙,而且在碳化过程中,碳酸钙不易在碟片填料中结垢。 相似文献
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牛顿摆是一种常见的物理实验演示设备,可以演示多种碰撞实验。利用3DsMax软件来设计牛顿摆模型,经过渲染生成的牛顿摆动画可用于多媒体教学。利用Reactor动力学系统可以对牛顿摆模型进行不同条件下的仿真模拟过程,并由仿真结果验证了碰撞过程符合动量守恒定律。 相似文献